What is the output of ps command in Linux?

What is the output of ps command in Linux?

ps displays status information about processes, and optionally, the threads running under each process. By default, for each process associated with the user’s terminal, ps displays the process ID (PID), TTY, processor time used (TIME), and name of the command (COMM).

What is the output of the command ps ef?

The “-ef” option of the “ps” command is used to print all the processes running on the system in the standard format.

What is the output of ps aux?

The ps aux command output description column by column Physical memory used by this process (in percentage). VSZ. Virtual memory used by this process (in bytes). RSS. Resident Set Size, the non-swappable physical memory used by this process (in KiB)

Which option along with ps command provides the detailed information of each process?

The -e option instructs ps to display all processes. The -f stands full-format listing, which provides detailed information about the processes.

What is S in ps output?

About the output fields of the ps command in Unix

Column Header	Contents
S or STAT	Process status code
START or STIME	Time when the process started
SZ	Virtual memory usage
TIME	Total CPU usage

What are the different process states that can be seen in ps output?

While these processes exist, they’ll be in one of the five possible states:

• Running or Runnable (R)
• Uninterruptible Sleep (D)
• Interruptable Sleep (S)
• Stopped (T)
• Zombie (Z)

What does ps grep show?

The ps command shows information about a selection of the active processes on the shell. You may also pipe out ps command output through grep command to pick up desired output.

What does the command ps ef Grepvm do?

You use the grep command within a Linux or Unix-based system to perform text searches for a defined criteria of words or strings. grep stands for Globally search for a Regular Expression and Print it out.

What is sz in ps output?

START or STIME. Time when the process started. SZ. Virtual memory usage. TIME.

What is S+ in ps Linux?

This answer is not useful. Show activity on this post. In the output of ps , a process’ state S means interruptible sleep, not uninterruptible sleep ( D ). When a process is in state S , it is waiting for the completion of some event, and can be controlled using usual manners e.g. via signals.

What is ps grep Smon?

ps -ef | grep smon — shows the number of instances running. windows : go to services and chk the Oracle Sids.

What is ps AUXW?

An alternate description is that this option causes ps to list all processes owned by you (same EUID as ps), or to list all processes when used together with the a option. w Wide output. Use this option twice for unlimited width.

What is the difference between ps EF and ps aux?

There are no differences in the output because the meanings are the same. The difference between ps -ef and ps aux is due to historical divergences between POSIX and BSD systems. At the beginning, POSIX accepted the -ef while the BSD accepted only the aux form. Both list all processes of all users.

What information is displayed by the ps aux command?

The POSIX and UNIX standards require that “ps -aux” print all processes owned by a user named “x”, as well as printing all processes that would be selected by the -a option. If the user named “x” does not exist, this ps may interpret the command as “ps aux” instead and print a warning.

What is VSZ and RSS in ps command?

PS service RSS stands for Resident Set Size and shows how much RAM is utilized at the time the command is output. It also should be noted that it shows the entire stack of physically allocated memory. VSZ – Virtual Memory Size.

What is C in ps output?

C column means “processor utilization for scheduling “, so it shows the percentage of time in schedule spent on certain process.

What does R mean in ps?

In the ps manual, under the section “PROCESS STATE CODES”: D uninterruptible sleep (usually IO) R running or runnable (on run queue) S interruptible sleep (waiting for an event to complete) T stopped by job control signal t stopped by debugger during the tracing W paging (not valid since the 2.6.xx kernel) X dead ( …

What is the difference between daemon and kernel?

They are similar to daemon processes. The primary difference is that kernel processes have full access to kernel data structures, which makes them more powerful than daemon processes that run in user space. Kernel processes also are not as flexible as daemon processes.